LUNZ and MPIO

Hi,
I installed 2 Aix server connected to a CX3-80 Array,
everything is done, powerpath & navisphere installed,
zoning ... One of the 2 is behaving normaly but the other
one not :
Without LUNS affected lsdev displays 2 FC LUNZ on one
while it displays one "hdisk MPIO Other Scsi drive".
The HBA are the same, the server are almost the same,
I wonder what can be the problem.
Thanks for hint
Â
Regards
Bandon

I presume the disk which shows MPIO is an EMC disk. You will need to do the following:

unmount the filesystem
rmdev -dRl hdiskpower??
rmdev -dRl hdisk??
cfgmgr
** hopefully it will have the right charteristics
If still same issue, you will need to clean up
the odm, please contact support to be sure this is what you should do:
odmdelete -q "uniquetype LIKE disk/fcp/EMCLAR*" -o PdAt

Please be sure that all CLARiiON filesystems are unmounted, hdiskpower and hdisk has been removed. DO NOT do this if booting from the SAN.

Hi,
What version of PowerPath did you install, and did you install the proper
ODM rte?
I know if the proper ODM's are not installed the disks will show up as
MPIO. I have had this problem in the past.
My current config below.
AIX 5.3. TL07 CX600 and CX380
PowerPath 5.1.1.0
Clariion aix.rte 5.3.0.1
Clariion fcp.rte 5.3.0.1
Symetrix aix.rte 5.3.0.1
Symetrix fcp.rte 5.3.0.1
Thanks
John

I also think that removing MPIO is not the solution. The system
showing LUNs is fine (no Claralert), no need to remove them, the
second system is not showing LUNZs but FC MPIO, that one is
not fine, it normally should have shown LUNZsÂ when LUNs are
not associated with Storage groups.
Â
Thanks

There are still LUNZ but it works. There are 4 fcsX (0 to 3)
on on system and 2 on the other.
One other thing is that I have 2 fcs in "Defined" state, how
to remove them cleanly, rmdev is talking of a child process.
Â
Thanks againÂ

Two thinks about your problem:
1. The EMC ODM package 5.3.0.x provides several filesets but only some of them need to be installed depending on your configuration. When connecting a CX to an AIX server with Powerpath, two EMC ODM filesets need to be installed:
- EMC.CLARiiON.aix.rte
- EMC.CLARiiON.fcp.rte

2. LUNZ is a "dummy" LUN which is configured when your host is not connected to a storage group or when there is no lun in the storage group.

The below procedure should help to fix your problem:
- stop Navisphere agent (if running) : /etc/rc.agent stop
- rmdev -Rdl fscsiX (do it for all driver instances)
- remove all EMC ODM filesets and install the two filesets mentioned above.
- run cfgmgr ( you should see only LUNZ devices ,it's normal at this stage)
- start Navisphere agent : /etc/rc.agent start and check on Navisphere manager that your host is registered
- connect your host to a storage group and add LUNs to the storage group
- on the host remove LUNZ devices : rmdev -dl hdiskX
- run cfgmgr (true LUNs should be configured)
- run powermt config

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